2-(3,4-dichlorophenyl)-4H-chromen-4-one | 84437-40-1

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 英文名称: 2-(3,4-dichlorophenyl)-4H-chromen-4-one
• 英文别名: 3',4'-Dichloroflavone；4H-1-Benzopyran-4-one, 2-(3,4-dichlorophenyl)-；2-(3,4-dichlorophenyl)chromen-4-one
• CAS: 84437-40-1
• 化学式: C₁₅H₈Cl₂O₂
• 分子量: 291.133
• InChiKey: UMWWIJIGWAEETI-UHFFFAOYSA-N

物化性质

• 沸点：
  426.1±45.0 °C(Predicted)
• 密度：
  1.432±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.8
• 重原子数：
  19
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  (E)-3-(3,4-dichlorophenyl)-1-(2-hydroxyphenyl)prop-2-en-1-one 在 碘 作用下， 以 二甲基亚砜 为溶剂， 生成 2-(3,4-dichlorophenyl)-4H-chromen-4-one
  参考文献：
  名称：

  Synthesis and inhibitory activity against COX-2 catalyzed prostaglandin production of chrysin derivatives

  摘要：

  A series of chrysin derivatives were prepared and evaluated for their inhibitory activities of cyclooxygenase-2 catalyzed prostaglandin production. Chrysin derivatives were prepared from 2-hydroxyacetophenone, 2,4-dihydroxyacetophenone and 2,6-dihydroxyacetophenone in 2 to 4 steps, respectively. Methxoylated chrysin derivatives were converted to the corresponding hydroxylated chrysin derivatives by the reaction with BBr3 in good yields. The inhibitory activity of the chrysin derivatives against prostaglandin production from lipopolysaccharide-treated RAW 264.7 cells was measured. We found that chrysin derivatives with 3',4'-dichloro substituents (5e, 6e and 7e) exhibited good inhibitory activity of prostaglandin production. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2003.12.087

文献信息

• One-Pot Allan-Robinson/Friedländer Route to Chromen-/Quinolin-4-ones through the Domino Acetylative Cyclisation of 2-Hydroxy-/2-Aminobenzaldehydes
  作者：Vijai K. Rai、Fooleswar Verma、Ganeshwar P. Sahu、Manorama Singh、Ankita Rai

  DOI：10.1002/ejoc.201701435

  日期：2018.1.31

  A domino reaction between 2‐hydroxy‐/2‐aminobenzaldehydes and α‐haloketones gives chromen‐4‐ones and quinolin‐4‐ones in good to excellent yields. This method represents a new extension of the Allan–Robinson and Friedländer reactions, and uses N‐heterocyclic‐carbene catalysis. This approach has the advantages of operational simplicity, ambient reaction conditions, and no by‐product formation.

  2-羟基/ 2-氨基苯甲醛与α-卤代酮之间的多米诺反应使chromen-4-ones和quinolin-4-ones的产率高到极好。该方法代表了Allan-Robinson和Friedländer反应的新扩展，并使用了N-杂环-卡宾催化。这种方法的优点是操作简单，环境反应条件好，并且不会形成副产物。
• Highly efficient synthesis of flavones via Pd/C-catalyzed cyclocarbonylation of 2-iodophenol with terminal acetylenes
  作者：Fengxiang Zhu、Yahui Li、Zechao Wang、Xiao-Feng Wu

  DOI：10.1039/c6cy00613b

  日期：——

  A highly efficient and selective Pd/C-catalyzed ligand-free cyclocarbonylation reaction for the synthesis of flavones has been developed. Various flavone derivatives were isolated in excellent yields with excellent functional group tolerances. Additionally, catalyst reuse experiments were performed successfully as well.

  已经开发出用于黄酮合成的高效且选择性的Pd / C催化的无配体环羰基化反应。以优异的产率和优异的官能团耐受性分离出各种黄酮衍生物。另外，催化剂再利用实验也成功进行。
• Ionic liquid mediated Cu-catalyzed cascade oxa-Michael-oxidation: efficient synthesis of flavones under mild reaction conditions
  作者：Zhiyun Du、Huifen Ng、Kun Zhang、Huaqiang Zeng、Jian Wang

  DOI：10.1039/c1ob06209c

  日期：——

  Flavonoids are a class of natural products, found in a wide range of vascular plants and dietary components. Their low toxicity and extensive biological activities, including anti-cancer and anti-bacterial, have made them attractive candidates to serve as therapeutic agents for many diseases. Herein, we disclose a highly efficient synthetic method of CuI-catalyzed cascade oxa-Michael-oxidation, using chalcones as substrates, mediated by the ionic liquid [bmim][NTf2] at a low temperature. This efficient synthetic method has demonstrated high synthetic utility and can afford flavones in good to high yields (up to 98%).

  黄酮类化合物是一类天然产物，广泛存在于维管植物和饮食成分中。它们具有低毒性和广泛的生物活性，包括抗癌和抗菌作用，使其成为治疗多种疾病的吸引人的候选治疗剂。在这里，我们揭示了一种高效的CuI催化的级联氧杂迈克尔氧化合成方法，以查尔酮为底物，在低温下通过离子液体[bmim][NTf2]介导。这种高效的合成方法展示了高度的合成实用性，可以获得高产率的黄酮类化合物（高达98%）。
• Synthetic approach to flavanones and flavones via ligand-free palladium(ii)-catalyzed conjugate addition of arylboronic acids to chromones
  作者：Donghee Kim、Kyungrok Ham、Sungwoo Hong

  DOI：10.1039/c2ob26061a

  日期：——

  The remarkable catalytic effects of Fe(OTf)3 in the context of the Pd(II)-catalyzed conjugate addition of arylboronic acids to chromones were observed to yield a variety of flavanones under mild conditions. The addition of catalytic amounts of DDQ and KNO2 to the reactions exclusively yielded flavone analogs. The reaction scope for the transformation was fairly broad, affording good yields of a wide range of flavanones and flavones, which are privileged structures in many biologically active compounds.

  在Pd(II)催化的芳基硼酸与色酮的共轭加成反应中，Fe(OTf)3显示出了显著的催化效应，能够在温和条件下合成各种黄酮。向反应中添加催化量的DDQ和KNO2则专门产生黄酮类似物。该转化的反应范围相当广泛，提供了良好的收率，合成了多种黄酮和黄酮类化合物，这些化合物在许多生物活性化合物中是具优势的结构。
• <i>In Vitro</i>Enzyme Inhibition Potentials and Antioxidant Activity of Synthetic Flavone Derivatives
  作者：Mohammad Shoaib、Syed Wadood Ali Shah、Niaz Ali、Ismail Shah、Muhammad Naveed Umar、Shafiullah、Muhammad Ayaz、Muhammad Nawaz Tahir、Sohail Akhtar

  DOI：10.1155/2015/516878

  日期：——

  Free radicals are produced by an important chemical process known as oxidation that in turn initiates chain reactions to damage the cells and originate oxidative stress. Flavones have got special position in research field of natural and synthetic organic chemistry due to their biological capabilities as antioxidant. The antioxidants are known to possess extensive biological effects that include antiviral, antibacterial, anti-inflammatory, antithrombotic, and vasodilatory activities. The simple flavone (F1) and substituted flavone derivatives (F2–F5) have been synthesized fromo-hydroxyacetophenone and benzaldehyde derivatives in good yield. The structures have been established by different spectroscopic techniques like¹H NMR,¹³C NMR, IR, and elemental analysis. Antioxidant profile of these compounds was established using DPPH and H₂O₂free radical scavenging assay. The findings showed that halogenated flavones showed more enzyme inhibitions and antioxidant activities than simple flavones and are potential candidates for the treatment of wide range of diseases.

  自由基是通过一种重要的化学过程氧化产生的，这进而引发链式反应来损伤细胞并产生氧化应激。由于它们作为抗氧化剂的生物学能力，黄酮类化合物在天然和合成有机化学研究领域中占据着特殊的地位。抗氧化剂被认为具有广泛的生物效应，包括抗病毒、抗菌、抗炎、抗血栓和扩血管活性。简单的黄酮类化合物（F1）和取代的黄酮类衍生物（F2-F5）已经从邻羟基苯乙酮和苯甲醛衍生物中以良好的产率合成。这些化合物的结构已通过不同的光谱技术（如1H NMR、13C NMR、IR和元素分析）确定。使用DPPH和H2O2自由基清除实验建立了这些化合物的抗氧化剖面。研究结果表明，卤代黄酮类化合物显示出比简单黄酮类化合物更多的酶抑制和抗氧化活性，是治疗各种疾病的潜在候选药物。